AI Article Synopsis
- Cobalt cyclopentadienyl complexes with fumarate and CO ligands are effective catalysts for [2+2+2] cycloadditions involving alkynes, nitriles, and alkenes.
- These reactions can produce various aromatic compounds, including benzenes, pyridines, and 1,3-cyclohexadienes.
- Unlike other cobalt catalysts, these complexes are air-stable, user-friendly, work under microwave conditions, and can function without the need for light activation.
Article Abstract
Cobalt cyclopentadienyl complexes incorporating a fumarate and a CO ligand (see picture) efficiently catalyze inter- and intramolecular [2+2+2] cycloadditions of alkynes, nitriles, and/or alkenes to give benzenes, pyridines, or 1,3-cyclohexadienes. Unlike catalysts such as [CpCo(CO)(2)] or [CpCo(C(2)H(4))(2)] (Cp = C(5)H(5)), they are air-stable, easy to handle, compatible with microwave conditions, and do not necessarily require irradiation to be active.
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